7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1 High
AI Score
Confidence
High
4.3 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:S/C:P/I:P/A:P
0.001 Low
EPSS
Percentile
28.5%
Issue Overview:
An out-of-bounds write flaw was found in the Linux kernel’s framebuffer-based console driver functionality in the way a user triggers ioctl FBIOPUT_VSCREENINFO with malicious data. This flaw allows a local user to crash or potentially escalate their privileges on the system. (CVE-2021-33655)
The Linux kernel before 5.18.13 lacks a certain clear operation for the block starting symbol (.bss). This allows Xen PV guest OS users to cause a denial of service or gain privileges. (CVE-2022-36123)
An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice. (CVE-2022-36879)
Affected Packages:
kernel
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update kernel to update your system.
New Packages:
aarch64:
kernel-4.14.290-217.505.amzn2.aarch64
kernel-headers-4.14.290-217.505.amzn2.aarch64
kernel-debuginfo-common-aarch64-4.14.290-217.505.amzn2.aarch64
perf-4.14.290-217.505.amzn2.aarch64
perf-debuginfo-4.14.290-217.505.amzn2.aarch64
python-perf-4.14.290-217.505.amzn2.aarch64
python-perf-debuginfo-4.14.290-217.505.amzn2.aarch64
kernel-tools-4.14.290-217.505.amzn2.aarch64
kernel-tools-devel-4.14.290-217.505.amzn2.aarch64
kernel-tools-debuginfo-4.14.290-217.505.amzn2.aarch64
kernel-devel-4.14.290-217.505.amzn2.aarch64
kernel-debuginfo-4.14.290-217.505.amzn2.aarch64
i686:
kernel-headers-4.14.290-217.505.amzn2.i686
src:
kernel-4.14.290-217.505.amzn2.src
x86_64:
kernel-4.14.290-217.505.amzn2.x86_64
kernel-headers-4.14.290-217.505.amzn2.x86_64
kernel-debuginfo-common-x86_64-4.14.290-217.505.amzn2.x86_64
perf-4.14.290-217.505.amzn2.x86_64
perf-debuginfo-4.14.290-217.505.amzn2.x86_64
python-perf-4.14.290-217.505.amzn2.x86_64
python-perf-debuginfo-4.14.290-217.505.amzn2.x86_64
kernel-tools-4.14.290-217.505.amzn2.x86_64
kernel-tools-devel-4.14.290-217.505.amzn2.x86_64
kernel-tools-debuginfo-4.14.290-217.505.amzn2.x86_64
kernel-devel-4.14.290-217.505.amzn2.x86_64
kernel-debuginfo-4.14.290-217.505.amzn2.x86_64
kernel-livepatch-4.14.290-217.505-1.0-0.amzn2.x86_64
Red Hat: CVE-2021-33655, CVE-2022-36123, CVE-2022-36879
Mitre: CVE-2021-33655, CVE-2022-36123, CVE-2022-36879
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1 High
AI Score
Confidence
High
4.3 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:S/C:P/I:P/A:P
0.001 Low
EPSS
Percentile
28.5%